CN104301595B - A kind of microwave camera microwave to dodge according to device - Google Patents

Abstract

The invention provides a microwave flashing device for a microwave camera. The device includes a microwave source, a gain directional antenna, and a reflector. The gain directional antenna receives the microwave emitted by the microwave source and reflects it to the imaging target of the microwave camera through the reflector. The microwave source includes a power supply connected by wires, a cathode, and an anode. The anode is connected to the anode of the power supply, and the cathode is connected to the cathode of the power supply. A linkage switch is set on the wire, and the linkage switch is connected and linked to the shutter of the microwave camera. The microwave generated by the microwave source radiates out through the gain directional antenna, concentrates the microwave energy in the wavelength range required by the microwave camera, shoots to the reflecting surface with extremely high intensity, and then shoots to the imaging target of the microwave camera, so that the microwave camera can Obtain sufficient microwave imaging power during imaging to improve the imaging quality of the microwave camera.

Description

Microwave flashing device for microwave camera

technical field

The invention relates to the field of microwave energy generation sources, in particular to a microwave flashing device for a microwave camera.

Background technique

The camera collects natural light through the lens, irradiates it on the optoelectronic device, and forms an image through the array of optoelectronic devices. Once the irradiation intensity of the light source is insufficient, a flashlight is required to supplement the light intensity. In the process of collecting images by microwave camera, microwave camera is a passive acquisition device, but the microwave intensity is extremely low in nature, so it is difficult to meet the imaging requirements of microwave camera. The angle and strength of the microwave irradiating the target have a great influence on the imaging. It is difficult to meet the minimum imaging intensity of the microwave camera by relying on the reflection of the microwave signal in nature, which affects the imaging quality.

Contents of the invention

Aiming at the problem that the microwave intensity in nature is insufficient during the imaging process of a microwave camera, which affects the imaging quality, the invention provides a microwave flashing device for a microwave camera to meet the requirements of the imaging microwave reflection intensity of the microwave camera.

The technical solution adopted by the present invention to solve the technical problem is: a microwave flashing device for a microwave camera, which includes a plurality of microwave sources of different wavelengths, a viewfinder, a two-axis pan-tilt, a gain directional antenna, a reflector, a traveling wave The pipeline, the transmitting device, the microwave source, the viewfinder and the reflection plate are fixed above the two-axis pan-tilt, and the viewfinder and the reflection plate are arranged in the same direction, the gain directional antenna receives the microwave emitted by the microwave source, and the reflection plate receives the gain directional The microwaves output by the antenna are reflected to the focusing lens, and the microwaves focused by the focusing lens are irradiated to the imaging target of the microwave camera; multiple microwave sources of different wavelengths are coupled to a traveling wave pipe through a coupler, and then emitted through the transmitting device. To meet the microwave reception requirements of multiple array antennas with different frequencies.

According to the above technical scheme, the microwave source is composed of a power supply connected by wires, a cathode, an anode, and a resonant cavity, the anode is connected to the anode of the power supply, the cathode is connected to the cathode of the power supply, and the cathode and the anode are placed at the microwave generation frequency In the resonant cavity, the cathode and the anode are isolated by an insulator, and a resonant circuit is formed through the resonant cavity. A linked switch is arranged on the wire, and the linked switch is connected and linked with the shutter of the microwave camera.

According to the above technical solution, a microwave intensity meter is also included, which is fixed on the housing of the microwave camera, moves with the microwave camera, and aligns with the focusing lens in the same direction.

According to the above technical solution, the reflecting plate is a surface of a paraboloid or a hyperboloid. The reflection effect of the paraboloid and the microwave effect are basically parallel microwaves, while the divergence of the hyperboloid reflection can be selected according to the scope of the irradiation object.

According to the above technical solution, the wavelength range of the microwave emitted by the microwave source is 1-20 mm.

According to the above technical solution, the viewfinder is a video camera.

According to the above technical scheme, the microwave flashing device of the microwave camera is not only controlled by the shutter, but also controlled by the microwave intensity meter when the microwave camera is working. By detecting the intensity of the microwave, the aperture of the camera is controlled by the control system, that is, the passage of the microwave is controlled. Once the intensity of microwave irradiation is greater than the receiving ability of the antenna array antenna, or when it will cause damage to the receiving antenna array, the control unit will turn down the aperture, and the microwave intensity measured by the microwave intensity meter will be the same as that detected by the microwave camera receiving antenna array. The magnitude of the microwave intensity is two to establish a logic or circuit control unit, namely: the microwave intensity meter and the microwave camera receiving antenna array detect any one of the microwave intensity is greater than the critical threshold of the microwave receiving unit, first adjust the aperture size, if the microwave If the strength is still greater than the acceptable strength of the receiving antenna, the working state of the receiving antenna array is cut off.

The microwave flashing device of the microwave camera of the present invention radiates the microwave generated by the microwave source through the gain directional antenna, concentrates the microwave energy in the wavelength range required by the microwave camera, and radiates it to the reflecting surface with extremely high intensity, and then radiates it to the The imaging target of the microwave camera enables the microwave camera to obtain sufficient microwave imaging power during imaging, and improves the imaging quality of the microwave camera.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the working schematic diagram of the microwave camera microwave strobe device of the embodiment of the present invention;

Fig. 2 is the structural representation of microwave source in Fig. 1;

Fig. 3 is a schematic diagram of the control of the microwave flashing device of the microwave camera.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figure 1, a kind of microwave camera microwave flashing device 13 is provided, and this device comprises the microwave source 5-2 of a plurality of different wavelengths, view finder, two-axis cloud platform, gain directional antenna, reflecting plate 5-1, line A wave duct, a transmitting device, the microwave source, a viewfinder and a reflector are fixed above the two-axis pan-tilt, and the viewfinder and the reflector are arranged in the same direction, the gain directional antenna receives the microwaves sent by the microwave source, and the reflector receives the gain The microblogs output by the directional antenna are reflected to the focusing lens 5-3, and the microwaves focused by the focusing lens are irradiated to the imaging target of the microwave camera, and multiple microwave sources of different wavelengths are coupled to a traveling wave pipe through a coupler, Launched by launcher. The function of the gain directional antenna is to improve the directivity of the microwave, reduce the side lobe, and increase the microwave intensity of the irradiated object. As a viewfinder camera, by adjusting the focal length of the optical lens of the camera, the range of the target to be shot is obtained, and then the position of the reflector and the focusing lens 5-3 are adjusted according to the irradiation range parameters, and the microwave signal is concentrated on the target to be shot, so as to improve the range of the target to be shot. The microwave intensity per unit area of an object. The start button 2 and the operating rod 1 are connected with the control device to operate the two-axis pan-tilt 9 to ensure that the microwave camera microwave flashing device, the microwave intensity meter 6, the camera 7, the camera display 3, and the microwave camera 8 are rotated as a whole. Simultaneously, a microwave separation wall 4 is set. Described microwave camera 19 comprises shielding casing, and the front end face of shielding casing is provided with opening, and microwave focusing lens is fixed in the opening, and in shielding casing, is positioned at the focal plane place of microwave focusing lens, receiving antenna array 20 is set, and the receiving antenna array The output end is connected with the microwave image display device, and an aperture 18 is arranged in front or behind the microwave focusing lens.

As shown in Figure 2, microwave source is made up of high-power power supply 14 and power supply 16, cathode 10, anode 12, resonant cavity connected by wire, described anode is connected with the anode of power supply, and described cathode is connected with the cathode of power supply, and cathode and the anode are placed in a resonant cavity with a microwave frequency, the cathode and the anode are isolated by an insulator 11, and a resonant circuit is formed through the resonant cavity, a linkage switch 13 is arranged on the wire, and the linkage switch is connected to the shutter 17 of the microwave camera 19 And linkage.

The microwave flashing device of the microwave camera in this embodiment also includes a microwave intensity meter, which is fixed on the housing of the microwave camera, moves with the microwave camera, and aligns with the focusing lens in the same direction, and judges whether the microwave intensity received by the microwave camera exceeds that received by the microwave camera. Intensity range, when it exceeds its receiving intensity range, turn down the output intensity of the microwave source. The microwave flashing device of the microwave camera is not only controlled by the shutter. When the microwave camera is working, it is also controlled by the microwave intensity meter. By detecting the microwave intensity, the aperture of the camera is controlled through the control system, that is, the microwave throughput is controlled. Once the microwave is irradiated When the intensity is greater than the receiving capability of the antenna of the antenna array, or it will cause damage to the receiving antenna array, the control unit will reduce the aperture to reduce the microwave intake, thereby controlling the energy of the microwave flashing device and reducing the damage to the antenna array. As shown in Figure 3, the microwave intensity meter 6 measures the microwave intensity and the microwave intensity detected by the microwave camera receiving antenna array 20 to establish logic or circuit control units, namely: the microwave intensity meter 6 and the microwave camera receiving antenna array 20 If any of the two detected microwave intensities is greater than the critical threshold of the microwave receiving unit, first adjust the size of the aperture, and once the aperture cannot guarantee the safety of the system, cut off the working state of the receiving antenna array to protect the working circuit.

Since the high-intensity microwave source has a certain degree of damage to the human body, in order to effectively illuminate the target, the microwave flashing device of the microwave camera establishes a linkage switch linked with the shutter of the microwave camera, so that the microwave flashing device is turned on when the microwave camera takes pictures. Improving the imaging quality of the microwave camera, the microwave flashing device is turned off when not taking pictures, and the microwave isolation wall 4 is set at the same time to reduce the damage of microwave radiation to the human body.

Figure 3 is a schematic diagram of the control relationship of the microwave flash device of the microwave camera. The microwave flash device of the microwave camera is a linkage system, and the linkage system is shown by the arrow in Figure 3. At the same time, in order to protect the system from being damaged by excessive microwave radiation, the entire device uses a microwave intensity meter to assist in controlling the microwave flashing device and aperture of the microwave camera. Once the radiation intensity is greater than the acceptable intensity of the antenna array, the device Reduce the aperture through the aperture control system, or turn off the microwave flashing device of the microwave camera to protect the entire system. If the microwave flashing device of the microwave camera or the receiving antenna array of the microwave camera cannot accept external microwave signals, the aperture can also be controlled to reduce microwave intake To protect the microwave flashing device of the microwave camera, the joystick 1 of the two-axis pan-tilt can control the operation and control of the two-axis pan-tilt (three-dimensional) 9 to change the spatial angle of the microwave flashing device of the microwave camera.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present invention.

Claims (7)

1. a kind of microwave camera microwave to dodge according to device, it is characterised in that the device includes the microwave source of multiple different wave lengths, finds a view Device, two axle The Cloud Terraces, gain directional antennas, reflecting plate, traveling wave tubes, emitter, the microwave source, view finder and reflecting plate are solid Two axle The Cloud Terraces top, and view finder and the equidirectional setting of reflecting plate are scheduled on, gain directional antennas receives the microwave source and sent Microwave, reflecting plate reception gain directional aerial output microwave simultaneously reflect it to condenser lens, focused on by condenser lens Imageable target from microwave irradiation afterwards to microwave camera；The microwave source of multiple different wave lengths is coupled to a row by coupler Wave duct road, is launched by emitter.

2. microwave camera microwave to dodge according to device according to claim 1, it is characterised in that the microwave source is connected by wire Power supply, negative electrode, anode, resonator composition, the anode is connected with the anode of power supply, the negative electrode phase of the negative electrode and power supply Even, negative electrode and anode are placed in the resonator that microwave produces frequency, isolated negative electrode and anode by insulator, and by humorous The chamber that shakes constitutes resonance circuit, sets linked switch on the wire, and the linked switch is connected parallel connection with the shutter of microwave camera It is dynamic.

3. microwave camera microwave to dodge according to device according to claim 2, it is characterised in that also including microwave intensity meter, Gu It is scheduled in microwave camera case, it is servo-actuated with microwave camera, it is consistent with amasthenic lens aligning direction.

4. the microwave camera microwave to dodge according to device according to claim 1 or 2 or 3, it is characterised in that the reflecting plate is throwing Object plane or a bi-curved face.

5. the microwave camera microwave to dodge according to device according to claim 1 or 2 or 3, it is characterised in that the microwave source is sent The wave-length coverage of microwave is 1~20mm.

6. the microwave camera microwave to dodge according to device according to claim 1 or 2 or 3, it is characterised in that the view finder is to take the photograph Camera.

7. microwave camera microwave to dodge according to device according to claim 1, it is characterised in that microwave camera microwave to dodge according to device The control of shutter is not only received, when microwave camera works, and is controlled by microwave intensity meter, it is strong by detecting microwave Degree, the aperture of camera is controlled by control system, that is, controls the throughput of microwave, once the intensity of microwave irradiation is more than antenna array The receiving ability of the antenna of row, or when having injury to receiving aerial array, control unit turns aperture down, and microwave is strong Degree meter measures microwave intensity size and sets up logic with the microwave intensity size two that microwave camera receiving antenna array is detected Or circuit control unit, i.e.,：Two of the microwave intensity that microwave intensity meter and microwave camera receiving antenna array are detected are any One microwave intensity is more than the threshold limit value of microwave receiving unit, aperture size is first adjusted, if microwave intensity is also greater than reception The acceptable intensity of antenna, is switched off the working condition of receiving antenna array.